Machine for applying cement to platform wedge heels



June 3, 1952 w. P. OSGOOD 2,598,717

MACHINE FOR APPLYING CEMENT To PLATFORM 'WEDGE HEELS Filed June 4, 1949 2 SHEETS-SHEET 1 J1me 3, 1952 w. P. OSGOOD 2,598,717

MACHINE FOR APPLYING CEMENT TO PLATFORM WEDGE HEELS Filed June 4, 1949 2 SHEETS--SHEET 2 Patented June 3, 1952 OFFICE MACHINE FORAPPLYING CEMENT T PLATFORM WEDGE HEELS 'Walter P. Osgood, 'Malden, Mass., assignor to Boston Machine Works Company, Lynn, Mass, a corporation of Massachusetts.

Application J une 4, 1949, Serial No. 97,204

3. Claims. (0]. 1185253) This invention relates to a machine for applylng cement to objects having considerable variation in width and/or thickness. More particularly the invention relates to a machine for the purpose of applying a coating of liquid cement to the upper surface of platform wedge heels which consist of a fore portion of uniform thickness extending from the toe to a point beyond the ball portion and rapidly increasing in thickness at the shank portion so that the thickness at the heel portion is sufficient to form a desired heel height. This machine is an improvement onthe cement-applying machine illustrated and described in my Patent No. 2,341,160, granted February 8, 1944. It is an object of the invention to provide a machine in which platform wedge heels are suitably guided and positively fed during the application of a coating of liquid cement to a face thereof. The work piece passes horizontally between a cylindrical coating roll which is beneath it anda feed roll which is pressed down upon it by its own weight and by an adjustable spring. Since the coating roll and feed roll are Widely separated by the passage of the heel portion of a work piece between them, a dash-pot device is attached to the support for the feed roll to prevent the latter from dropping suddenly down on the coating roll when a work piece passes from between them. Guides are provided to line up the work piece longitudinally with its direction oftravel so that the coating roll will come into contact with all of the surface to be coated.

For a more complete understanding of the invention, reference may be had to the following description thereof and to the drawings, of which- 3 Figure 1 is a plan view of a machine embodying the invention;

Figure 2, .is a section on the line 2--2 of Figure 1;

Figure 3 is a section on the line 3-3 of Figure 2;

Figure 4 is a section on the line 4-4 of Figure 2;

Figure 5 is a section on the line '5-5 of Figure 2; and

Figure 6 is a perspective view of a platform wedge heel.

The cement-applying machine illustrated in the drawings includes a suitable base It, a portion of which appears in several of the figures. Journaled in this base is a horizontal shaft I2 onwhich is mounted a cylindrcial coating roll I4. As indicated in Figure 5, this roll dips into a pool It of liquid-cement from which a film is raised by the peripheral surface of the roll I4 as it revolves. A suitable doctor 18 may be employed to regulate the thickness of the liquid film on the periphery of the roll.

Above the base III, a canopy '20- is hinged to rock on a horizontal axis laterally offset from the axis of the shaft I2. The rocking "axis of the canopy 20 may conveniently be a fixed rod 22 which extends through a pair .of upstanding cars 24 and 26 on the base It and also through bearing portions 28 and 30 of the canopy 20.

A horizontal shaft 32 is journaled in the canopy directly above the roll I4. This shaft is within an extension 34 of the canopy 20 and carries a feed roll 36 and two narrow rolls 38 and 40. The peripheral surface of the feed roll. 36 is in the form of an equatorial zone of a sphere, as indicated in Figures 2 and 3, the mid-portion of the perimeter being notched, as at 42-, to form teeth, as indicated in Figure 5. The rolls 3-8 and are of equal size and are spaced from opposite ends of the feed roll 36, the diameter of these rolls being slightly less than the maximum diameter of the feed roll 36. The shaft 32, on which the three rolls are mounted, has a gear Wheel 44 mounted thereon. This gear wheel meshes with a gear wheel 46 mounted on the shaft 22. The gear wheel 46 is of suflicient axial length to mesh also with a gear wheel 48 mounted on. a shaft 50 journaled in a pair of upstanding ears5'2 and 54 of the base I0.

As is evident from Figure 4,, the canopy 2'0 with the shaft 32 and rolls carried thereby, may be swung upward about the axis of the rod 22 while the gear wheel 44' remains at all times in mesh with the gear wheel 46. Hence, no matter what the position of the canopy may be, the driving of the feed. wheel 36 is not interrupted by any lifting of. the canopy which carries it. The shaft 50 is operatively connected to the shaft I2. by a pair of gear wheels 56 and 58 which are mounted on the respective shafts and are constantly in mesh with each other. Any suitable means for driving the shafts I2 and 50 may be provided, such as a pulley 60 mounted on the shaft I2, and a power belt 62 extending around this pulley.

A work table 64 is mounted on the base It in front of the coating and feed rolls and approximately on a level with the bite between these rolls. A pair of resilient guides 66 and 68 may be mounted on the table 64 to guide work pieces between the coating and feed rolls, as indicated in Figure 1. The guides 66 and 68 are preferably resilient strips of steel or the like, which can 1 a complete inner sole. the top faceof a wooden wedge 12 which begins I at the shank portion of the layer and is shaped to increase rapidly in thickness to a maximum at 3 its heel end where the thickness is usually many times that of the layer 10.

I this work piece being a platform wedge heel consisting of a top member 10, which may be a layer of pressed cork or the like, having the contour of This layer is secured to The workpiece is introduced into the machine upside down and toe end first, by being slid across the work table 64 toward the bite between the coating roll and j the feed roll. The feed roll bears on the upper surface of the work piece, this surface being the bottom of the work piece since the latter is upside down. The teeth 42 of the feed wheel are pressed into the upper surface of the work piece by the weight of the canopy and the members carried thereby, strongly augmented by a spiral spring 13, one end of which is secured to the canopy 20,- the other end being secured to the rod 22, The rod 22 is adjustably fixed by any suitable means, such as a set screw 14, threaded in the stationary car 24 which is a part of the base l0.- The inner end of the set screw bears against the rod and holds it in a desired angular position to which it may be turned by manipulation of a suitable handle 15. In this way the I tension of the spring 13 can readily be adjusted.

The coating wheel and feed wheel are driven by a common driving means so that they cooperate in causing the work piece to advance steadily through the bite between these rolls. The guides 66 and keep the work piece substantially centered with respect to the feed roll, and align it with the direction of motion if the operator is careless in placing it on the feed table. The spherical peripheral surface of the feed roll 38 permits the straightening of a work piece which has beenv placed obliquely on the. tables, such straightening or aligning being brought about by the guides 66 and 68 during the feeding operation. The marginal portions of the work piece are held down against the coating roll by the press rolls 38 and 40, as indicated in Figure 2. Thus, the entire top surface of the inverted work piece is caused to pick up a coating of liquid cement from the surface of the coating roll over fingers, clothing or the like in the moving gears.

When the thickest portion of the work piece passes beyond the rolls l4 and 36, the latter roll is free to descend to its normal position immediately above the coating roll Hi. In order to avoid damage to the machine, which might result from too rapid a fall of the-canopy and the rolls carried thereby, a suitable dash-pot device is provided. This comprises a hollow cylinder in which a piston slides, this piston being on the end of a piston rod 82 extending into the upper end of the cylinder 80. The lower end of the cylinder is rockably mounted on a bracket 84 projecting from the base ID.

The piston rod 82 is pivotally connected at its upper end to a bracket 86 which is mounted on the canopy 20. The dash-pot operates in the customary manner .to provide a pneumatic cushion to check the descent of the canopy and the members carried thereby when the feed roll 26 rides off the thickest portion of a work piece and is free to descend.

- I claim: v

'1. In a coating machine having a base, a coatingroll mounted on said base to revolve about a horizontal axis, a feed roll yieldingly supported above said coating roll, common means for driving both said rolls, and dash-pot means between said supporting means and base to check any sudden downward movement of the feed roll.

2. In a coating machine having a base, a coating roll mounted on said base to revolve about a horizontal axis, a frame hinged to said base to rock about an axis parallel to and offset from said horizontal axis, a shaft journaled in same frame parallel to said axis, a portion of said shaft being above said coating roll, a relatively short feed roll fixed on said shaft above said coating roll, the peripheral surface of said feed roll being in the form of a spherical zone, and a pair of narrow press rolls mounted on saidshaft and spaced from the respective ends of said feed roll.

3. In a coating machine having a base, a cylindrical coating roll mounted on said base to ,revolve about a horizontal axis, a relatively short feed roll rotatably mounted above said coating roll, said feed roll having the shape of a central zone of a sphere, common means for driving said rolls, and spaced guide members adjacent to said rolls engageable by side edges of work-pieces approaching the rolls. 7 e a WALTER P, OSGOOD.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Osgood Feb. 8, 1944 

